Siemens Nucleus NET/Nucleus RTOS/VSTAR DNS Module out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Siemens Nucleus NET, Nucleus RTOS and VSTAR. This vulnerability affects unknown code of the component DNS Module. Performing a manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2020-27738. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Siemens Nucleus NET, Nucleus RTOS and VSTAR (version now known). This affects some unknown processing of the component DNS Module. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 04/23/2021 as ssa-669158. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2020-27738. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/26/2020 🔍
04/23/2021 +178 days 🔍
04/23/2021 +0 days 🔍
04/27/2021 +4 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-669158
Status: Confirmed

CVE: CVE-2020-27738 (🔍)
GCVE (CVE): GCVE-0-2020-27738
GCVE (VulDB): GCVE-100-173781

Entryinfo

Created: 04/23/2021 08:32
Updated: 04/27/2021 14:28
Changes: 04/23/2021 08:32 (37), 04/27/2021 14:28 (5)
Complete: 🔍
Cache ID: 216::103

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